CVE-2023-38831

high-risk
Published 2023-08-23

RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the contents of the folder (which may include executable content) are processed during an attempt to access only the benign file. This was exploited in the wild in April through October 2023.

Do I need to act?

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93.9% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Rarlab

References (11)

Exploit http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html
Exploit https://blog.google/threat-analysis-group/government-backed-actors-exploiting-wi...
Issue Tracking https://news.ycombinator.com/item?id=37236100
Exploit https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-a...
Exploit https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/
Exploit http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html
Exploit https://blog.google/threat-analysis-group/government-backed-actors-exploiting-wi...
Issue Tracking https://news.ycombinator.com/item?id=37236100
Exploit https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-a...
Exploit https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-...
56
/ 100
high-risk
Severity 24/34 · High
Exploitability 27/34 · High
Exposure 5/34 · Minimal